DROP TABLE IF EXISTS order_voucher; -- DROP SEQUENCE IF EXISTS order_voucher_order_voucher_id_seq; -- CREATE SEQUENCE order_voucher_order_voucher_id_seq; CREATE TABLE order_voucher ( "order_voucher_id" int PRIMARY KEY GENERATED BY DEFAULT AS IDENTITY, -- SERIAL PRIMARY KEY "order_id" int check ("order_id" > 0) NOT NULL, "voucher_id" int check ("voucher_id" > 0) NOT NULL, "content" varchar(191) NOT NULL, "voucher" varchar(10) NOT NULL, "from_name" varchar(64) NOT NULL, "from_email" varchar(96) NOT NULL, "to_name" varchar(64) NOT NULL, "to_email" varchar(96) NOT NULL, "message" text NOT NULL, "amount" decimal(15,4) NOT NULL -- PRIMARY KEY("order_voucher_id") ); -- SELECT setval('order_voucher_order_voucher_id_seq', 0, true); -- last inserted id by sample data